Southwest Airlines has barred its pilots from landing on the runway where a UPS cargo jet was trying to land when it crashed at Birmingham's airport last year.

A spokeswoman for the Texas-based airline, Jenna Williamson, said Tuesday the passenger carrier took that action because pilots were getting cockpit alerts warning they were too close to the ground on approach.

Williamson says Birmingham's Runway 18 is no longer authorized for Southwest landings, but pilots can still use it for takeoffs.